Journal
MATERIALS LETTERS
Volume 180, Issue -, Pages 157-161Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2016.05.157
Keywords
Friction stir welding; Aluminum alloys; Cooling system; Microstructure and texture; Hardness
Funding
- Fundamental Research Program of the Korea Institute of Materials Science, South Korea (KIMS) [PNK3751, PNK4550]
- National Research Council of Science & Technology (NST), Republic of Korea [PNK4550] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Strength drop after welding of Al-Mg-Si aluminum alloys has been a crucial issue in industrial applications. Friction stir welding combined with a cooling system was carried out, and microstructure and mechanical properties of the welded Al-Mg-Si alloys were examined. Welding with cooling increased yield strength and decreased elongation of Al-Mg-Si alloys. Tensile strength and overall grain size of the welded zone varied with welding speed. The width of the welded zone based on hardness distribution clearly depended on welding speed. Overall, hardness dropped with coolant. (C) 2016 Elsevier B.V. All rights reserved.
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